GANGSTA rap is back.One of the most violent CDs ever recorded has quietly snuck into stores – and its explosive lyrics may spark more fighting in the rap world.Riddled with curse words and blood-drenched lyrics, Death Row Records’ “Too Gangsta for Radio” takes aim at Dr. Dre and Eminem, calling them gay and threatening their lives. One song by an artist named Tha Realest even claims Eminem is working for the Ku Klux Klan.

“The lyrics are just ridiculous,” says Jason Harper, a music writer at Gear magazine. “They talk about Eminem being the first white rapper being killed, and pretty much are confirming Suge Knight’s image as an intimidator.”

Spokesmen for Dre and Eminem refused to comment on the songs.

The disc is one of the first releases from Death Row since controversial CEO Marion “Suge” Knight went to prison in 1996 for a probation violation, after he was videotaped beating alleged Crip gang member Orlando Anderson in Las Vegas the same night as Tupac Shakur was shot.

Knight shows no sign of changing his violent ways. “Suge Knight is gangsta rap,” Knight told The Post in a recent jail-house interview. “When I get out, I’m going straight to the ghetto and recruiting newer, harder artists. Gangsta rap is here to stay.”

Though Knight says he’s not connected to the Bloods gang, a letter he has chosen to publish on the inside cover suggests otherwise.

The note is from former Death Row rappers Daz and C-Style, who plead with Suge not to make good on his threats to sic the Bloods on their family members.

Death Row spokesman Jonathan Wolfson, however, says Knight denies being involved with the Bloods and printed the letter “to show that these guys are snitches.”

A second, less violent, Death Row release is Snoop Dogg’s old-school gangsta disc “Dead Man Walkin’,” which came out Oct. 31.

Snoop, now a Knight rival, did not want Death Row to release the album after he left for No Limit/Priority Records (Master P’s label), but was bound by a contract.

According to Wolfson, Snoop is now trying to keep the release quiet.

“He has told radio stations that if they play any songs off the album, they can forget about interviewing or talking to him ever again,” Wolfson says.

“But even without radio play, any videos or mass publicity, the album has already sold 46,000 copies [in just one week] and Suge feels that it’s Snoop at his best.”